Reduce the attack surface at the desktop with a secure KVM designed for environments where data separation matters. The Black Box KVS4-2004DX is built around tamper-proof protection, helping keep connected systems isolated from one another while giving operators direct access to multiple computers from a single console. This model supports DVI video and WQXGA graphics mode, making it a strong fit for control rooms, security operations, and regulated environments that need clear visual detail without compromising access discipline. Its 4-port design keeps the footprint focused for smaller secure deployments, while the 100-240 V input range supports flexible installation across standard infrastructure. For teams that cannot accept casual switching hardware, this KVM is about control, not convenience. It is the right choice when the cost of a breach, leak, or unauthorized path is far higher than the cost of the switch itself.